Journal of Jilin University(Engineering and Technology Edition) ›› 2022, Vol. 52 ›› Issue (8): 1881-1888.doi: 10.13229/j.cnki.jdxbgxb20210159

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Text input based on two⁃handed keyboard in virtual environment

Gui-he QIN(),Jun-feng HUANG,Ming-hui SUN()   

  1. College of Computer Science and Technology，JiLin University，Changchun 130012，China
  • Received:2021-03-01 Online:2022-08-01 Published:2022-08-12
  • Contact: Ming-hui SUN E-mail:qingh@jlu.edu.cn;smh@jlu.edu.cn

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Abstract:

Text input is the most common interaction behavior in viture reality（VR） environment， and the mainstream text input is currently realized by laser pointing. However， the existing methods have many drawbacks， such as low efficiency， large jitter， and easy false trigger， which cannot be used to frequently input text in VR environment. Therefore， a novel text input method for VR environment is proposed. First，First, partition the keyboard, use the handle to select the area where the characters are located， and use the word disambiguation algorithm to realize text input in units of words； secondly， perform cluster analysis on the user's click coordinates to do one-key multi-word processing； Finally， three keyboard layouts that conform to user habits are designed， and the optimal layout is determined The experimental results show that the typing speed of the optimal layout is 13.44 WPM（Words Per Minute） with an accuracy of 92.26%， which is a significant improvement compared with other input methods.

Key words: computer application technology, human-computer interaction, virtual reality, text input, word disambiguation

CLC Number: 

  • TP391.9

Fig.1

HTC Vive handle"

Fig.2

Clustering results of left and right hands"

Fig.3

Three layouts of QWERTY keyboard"

Fig.4

One-line one-key vocabulary tree structure"

Table 1

Number of words corresponding to the same sequence"

对应单词数一键布局/%两键布局/%三键布局/%
198.1996.8874.13
21.712.6613.06
30.100.445.09
4--3.82
5--2.04
6--0.80

Fig.5

Speed comparison of three layouts"

Fig.6

Comparison of three layout error rates"

Fig.7

Comparison of subjective experience of three layouts"

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